Specifications include, but are not limited to: 3.1.1.1Mechanical Specifications 3.1.1.1.1All structural elements shall be designed and fabricated in accordance with TIA/EIA standard RS-222G, Structural Standards for Steel Antenna, Towers, and Supporting structures. Download available here: Structural Standards for Antennae and Towers.A building markup (ExhibitD) is attached to facilitate this.3.1.1.1.2All hardware shall be constructed of non-ferrous material or be galvanized:3.1.1.1.2.1Steel elements shall be hot-dip galvanized in accordance withtheASTM A123standard available here: ASTM A123 Standard3.1.1.1.2.2Zinc coating shall be applied with a minimum thickness of 0.002inches (0.5mm)3.1.1.1.3Physical Antenna attributes:3.1.1.1.3.1Antenna shall be top mounted3.1.1.1.3.2Antenna shall have lifting points and directions for possible helicopter installation.3.1.1.1.3.3Antenna shall be designed for mounting as outlined in Exhibit B, WVPB Top of Steel Drawing.3.1.1.1.3.4Radiating elements shall be protected from ice by beingenclosed in a Radome3.1.1.1.3.5Vendor shall provide mechanical interface between top of steel and antennaifrequired.3.1.1.1.3.6Weight without ice shall be less than 5000pounds3.1.1.1.3.7Effective Projected Area (wind load) shall be less than 64.6square feet (6square meters)3.1.1.1.3.8Moment arm shall be less than 22 feet (6.7 Meters)3.1.1.2Electrical specifications:3.1.1.2.1Antenna shall operate on DTV Channel 9 (186-192MHz)3.1.1.2.2Polarization shall be elliptical3.1.1.2.3The Horizontal Azimuth Pattern shall meet the parameters defined in the Attachment provided (PDF of Construction permit on file with the FCC –Exhibit C)3.1.1.2.4The antenna shall have a vertical component of 25% compared to the horizontal radiation3.1.1.2.5Antenna and transmission line shall produce an Effective Radiated Power of 23KWwith a post mask filter TPO of less than 4KW.3.1.1.2.6Antenna and transmission line must be able to operate with a power level of 20 KW Transmitter Power Output. 3.1.1.3Transmission Line and Accessories:3.1.1.3.1Vendor shall provide Transmission Line able to operate with 20Kilowatts DTV (Digital Television) power 3.1.1.3.1.1Current transmission line is 61/8” EIA, 75 Ohm with matching transformers at each end.3.1.1.3.2Vertical run is 1081 feet to top of steel3.1.1.3.3Horizontal run is100 feet3.1.1.3.4Vendor shall provide all Transmission Line components for complete installation.Components shall include but not be limited to: Hangers, hoisting adapters, Elbows, Field terminated line sections, transformers, and pressure windows.
